does multi host connection string supports login event trigger exception

Hello to all the readers,
I'm trying to build a login event trigger in conjonction with a multi host connectio string
to manager instances roles in a logical replication cluster.

I'm surprised by the result found with (pg client 16+ on windows and linux),
here is my test case:

--on XX server
--create a LOGIN EVENT TRIGGER
--psql
CREATE OR REPLACE FUNCTION init_session()
RETURNS event_trigger SECURITY DEFINER
LANGUAGE plpgsql AS
$$
BEGIN
IF session_user = 'aaaaa' THEN
RAISE EXCEPTION 'Login forbidden';
END IF;
END;
$$;

-- trigger definition
CREATE EVENT TRIGGER init_session
ON login
EXECUTE FUNCTION init_session();
ALTER EVENT TRIGGER init_session ENABLE ALWAYS;

No trigger on YY server

--on ZZ server
set PGPASSWORD=pass
psql -d "host=XX,YY dbname=postgres port=5432 user=aaaaa"
psql: error: connection to server at "XX" (xx.xx.xx.xx), port 5432 failed: FATAL: Login forbidden
CONTEXT: PL/pgSQL function init_session() line 4 at RAISE

** It exits without trying connection on YY host !?**

Similar connection string on JDBC work as I wish:

*
try XX, with error
*
then try YY server and succeed.

Did I miss something ?
Regards
PAscal